Envelope
Your own IMAP/SMTP mailboxes as agent tools, with per-agent policy and human-approved sends.
What it does
Envelope is an MCP server, a connector that lets an AI assistant use it as a tool. It is installed locally as a package and runs on your machine.
From the publisher's description, Electra Index matched it to one capability: email automation. That makes it a candidate for tasks such as send and chase invoices or book sales meetings.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · not tested by Electra IndexInstall package
- MCP BUNDLE
https://github.com/tymrtn/U1F4E7/releases/download/v1.3.26/envelope-1.3.26.mcpb· runs locally (stdio)
No ready-made settings: the registry entry does not contain everything needed. Follow the publisher's instructions.
Tasks it helps with
Share of each task's required capabilities it covers| Send and chase invoices Email Automation | 50% |
| Book sales meetings Email Automation | 50% |
| Draft emails Email Automation | 50% |
| Follow up on quotes Email Automation | 50% |
| Manage my inbox Email Automation | 50% |
| Run email marketing campaigns Email Automation | 50% |
| Run satisfaction surveys Email Automation | 50% |
| Send personalized outreach Email Automation | 33% |
Similar tools
Listed for the same task: send and chase invoices- FoxyInvoiceREMOTELOCALInvoicing tools for AI assistants: clients, draft invoices with computed tax, and email sending
- your-mail-mcpREMOTELOCALRead-only, self-hosted MCP access to IMAP email, mirrored locally and indexed by notmuch
- ReachkitREMOTELOCALFind B2B leads with verified emails, write sequences, and launch and track cold email campaigns
- Receipts & invoices to spreadsheetREMOTELOCALReceipts and invoices to checked spreadsheet rows. Doubtful numbers are flagged
- NexusAGYmailREMOTELOCALGmail for Google Antigravity via the official API; sends only after the user's yes
- Mailbox MCPREMOTELOCALRead, send, file and search email in any Gmail, Microsoft 365 or IMAP mailbox, plus its calendar
Ready-made AI agents
- Booke AI51$129/mo · Prices & score →
- Xelix32On quote · Prices & score →
- $49/mo · free plan · Prices & score →
- Digits86$65/mo · Prices & score →
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Install package | https://github.com/tymrtn/U1F4E7/releases/download/v1.3.26/envelope-1.3.26.mcpb | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Package registries | mcpb | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Local install (package) | yes | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Remote access (hosted) | no | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Website | https://u1f4e7.com | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Repository | https://github.com/tymrtn/U1F4E7 | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Version | 1.3.26 | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | 1h ago |
Change history
- NEW27 Oct 2026first seen in the index
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How do I connect Envelope?
Install the MCP bundle package https://github.com/tymrtn/U1F4E7/releases/download/v1.3.26/envelope-1.3.26.mcpb. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What can I use Envelope for?
Based on its description, it is most relevant to: send and chase invoices, book sales meetings, draft emails, follow up on quotes.